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THE UNIVERSITY SCIENCE BULLETIN. 



TABLE 1.— Eastern- Group. Rainfall data for twenty-four consecutive cycles ending 1913. 

 Sun-'pot minimum occurs in phase 4. 



TABLE 2.— Rainfall data cf six western states September, 1889, to April, 1913. 

 Phase numbers same as for Eastern group. 



* These months not used in mean since only one state's data available. 



